Lecture Eight (Powerpoint format) - Flash
... Sirius A/B Sirius B turns out to be an eclipsing binary, so that its radius can also be determined from the eclipse measurements. These observations revealed a highly unusual structure -- a mass about that of the sun, and a radius about that of the Earth. Sirius B became the first-known white ...
... Sirius A/B Sirius B turns out to be an eclipsing binary, so that its radius can also be determined from the eclipse measurements. These observations revealed a highly unusual structure -- a mass about that of the sun, and a radius about that of the Earth. Sirius B became the first-known white ...
Constellations and Distances to Stars
... • If you were to stand on the north pole and look up at the sky, Polaris would be at the sky’s Zenith, straight overhead, fixed, and unmoving. ...
... • If you were to stand on the north pole and look up at the sky, Polaris would be at the sky’s Zenith, straight overhead, fixed, and unmoving. ...
Lecture 12
... An H-R diagram for the 5000 stars with the best distance determinations from Hipparcos: `Observational’ axes: color and absolute magnitude Colors indicate the density of stars in that part of the diagram Most important point: most of the possible combinations of L and Te are not populated by real st ...
... An H-R diagram for the 5000 stars with the best distance determinations from Hipparcos: `Observational’ axes: color and absolute magnitude Colors indicate the density of stars in that part of the diagram Most important point: most of the possible combinations of L and Te are not populated by real st ...
Physics@Brock - Brock University
... 42. In order to detect a black hole the astronomers look for (a) a spot into which stars and their planets fall. (b) a very intense source of infrared radiation. (c) a binary system where a companion star is not visible but it has a mass greater than 3 solar mass and is an intense X-ray source. (d) ...
... 42. In order to detect a black hole the astronomers look for (a) a spot into which stars and their planets fall. (b) a very intense source of infrared radiation. (c) a binary system where a companion star is not visible but it has a mass greater than 3 solar mass and is an intense X-ray source. (d) ...
Star evolution - El Camino College
... • What kind of pressure resists gravity? – _______________________pressure ...
... • What kind of pressure resists gravity? – _______________________pressure ...
Determining the Sizes & Distances of Stars Using the H
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
answer key
... 16. What do these super large stars produce? 17. What happens when 2 neutron stars collide? What is produced? 18. What is the chance of a collision between the sun and another star? Failed Stars (After 5th intro frame) 19. What are “blue stragglers”? 20. Which types of stars are known as “failed sta ...
... 16. What do these super large stars produce? 17. What happens when 2 neutron stars collide? What is produced? 18. What is the chance of a collision between the sun and another star? Failed Stars (After 5th intro frame) 19. What are “blue stragglers”? 20. Which types of stars are known as “failed sta ...
Characteristics of Stars
... When ancient observers around the world looked up at the night sky, they imagined that groups of stars formed pictures of people or animals. Today, we call these imaginary patterns of stars constellations. Astronomers classify stars according to their physical characteristics. Characteristics used t ...
... When ancient observers around the world looked up at the night sky, they imagined that groups of stars formed pictures of people or animals. Today, we call these imaginary patterns of stars constellations. Astronomers classify stars according to their physical characteristics. Characteristics used t ...
Interstellar medium, birth and life of stars
... star becomes unstable and begins to pulsate. RR Lyrae variables are low-mass, pulsating variables with short periods. Cepheid variables are high-mass, pulsating variables exhibiting a regular relationship between the period of pulsation and luminosity. Mass can be transferred from one star to an ...
... star becomes unstable and begins to pulsate. RR Lyrae variables are low-mass, pulsating variables with short periods. Cepheid variables are high-mass, pulsating variables exhibiting a regular relationship between the period of pulsation and luminosity. Mass can be transferred from one star to an ...
Galaxy Far Far Away ppt
... HALO: Area surrounding galaxy that contains some scattered globular clusters. DISK: Contains most of the stars in the galaxy. ...
... HALO: Area surrounding galaxy that contains some scattered globular clusters. DISK: Contains most of the stars in the galaxy. ...
Astrophysics E1. This question is about stars.
... both space and time originated with the Big Bang; the universe is expanding (and not infinite); due to the expansion, light from the Big Bang is red-shifted to the microwave region so regions between stars will not appear bright; light from very distant stars will not have reached us yet; the univer ...
... both space and time originated with the Big Bang; the universe is expanding (and not infinite); due to the expansion, light from the Big Bang is red-shifted to the microwave region so regions between stars will not appear bright; light from very distant stars will not have reached us yet; the univer ...
Pretty Pictures of the Cosmos
... nursery located some three million light-years distant in the spiral galaxy, M33. ...
... nursery located some three million light-years distant in the spiral galaxy, M33. ...
sa`d al-malik - WordPress.com
... • It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. •It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Erida ...
... • It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. •It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Erida ...
The Sun: Example of Radiation Laws
... • An isotope is a nucleus with the same Z as another nucleus but with a different neutron ...
... • An isotope is a nucleus with the same Z as another nucleus but with a different neutron ...
Document
... that neutronization occurs converting the electrons and protons into neutrons and releasing a blast of neutrinos ...
... that neutronization occurs converting the electrons and protons into neutrons and releasing a blast of neutrinos ...
Measuring large distances
... So based on the color of a star, and how bright it is, it’s possible to make a guess about how far away the star is. ...
... So based on the color of a star, and how bright it is, it’s possible to make a guess about how far away the star is. ...
The Stellar Graveyard
... not indicate what its initial mass was. A 0.5 solar mass white dwarf could have easily started out life as a 10 solar mass main sequence star. A white dwarf star is therefore the remnant carbon/oxygen core of a former main sequence star. All of the hydrogen and helium that used to be in the star has ...
... not indicate what its initial mass was. A 0.5 solar mass white dwarf could have easily started out life as a 10 solar mass main sequence star. A white dwarf star is therefore the remnant carbon/oxygen core of a former main sequence star. All of the hydrogen and helium that used to be in the star has ...
3536
... the planet is super-Earth size, full mantle convection becomes less efficient, so that heat in deep interiors is transferred by conduction rather than convection. This reduces the efficiency of volcanic, tectonic activity and the magnetic dynamo in massive terrestrial type planets [3]. Because the s ...
... the planet is super-Earth size, full mantle convection becomes less efficient, so that heat in deep interiors is transferred by conduction rather than convection. This reduces the efficiency of volcanic, tectonic activity and the magnetic dynamo in massive terrestrial type planets [3]. Because the s ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.